Description This is a rubber watch gasket that keep your watch water resistant. Made of rubber material and of fair quality. These are excellent replacements for many of the brand watches, and also for non brand watch. This is excellent for most watches,especially if you are doing watch battery replacement. Features - Color: Black. - Material: Rubber. - Size:8.50X5.50X2.00cm/ 3.34X2.16X0.79inch. - Made of premium rubber, durable, wear-resistant and corrosion resistant. - Easy to use and easy to install. Also it has good sealing effect. - Stored in a labeled and organized resealable case saves you effort in tidying up and choosing sizes. - Application: They are suitable for watch repair and DIY watchmaker. - Adopts precision production to the stable characteristics and high reliability. Package listing: 1 x box of rubber rings